CN101008358B - Engine control apparatus - Google Patents

Engine control apparatus Download PDF

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Publication number
CN101008358B
CN101008358B CN2007100017229A CN200710001722A CN101008358B CN 101008358 B CN101008358 B CN 101008358B CN 2007100017229 A CN2007100017229 A CN 2007100017229A CN 200710001722 A CN200710001722 A CN 200710001722A CN 101008358 B CN101008358 B CN 101008358B
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CN
China
Prior art keywords
fuel
unit
character
motor
fuel quantity
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Expired - Fee Related
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CN2007100017229A
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Chinese (zh)
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CN101008358A (en
Inventor
中川慎二
兼利和彦
加藤木工三
市原隆信
大须贺稔
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Hitachi Ltd
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Hitachi Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/061—Introducing corrections for particular operating conditions for engine starting or warming up the corrections being time dependent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0613—Switch-over from one fuel to another
    • F02D19/0615—Switch-over from one fuel to another being initiated by automatic means, e.g. based on engine or vehicle operating conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0626—Measuring or estimating parameters related to the fuel supply system
    • F02D19/0628—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position
    • F02D19/0631—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position by estimation, i.e. without using direct measurements of a corresponding sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0626—Measuring or estimating parameters related to the fuel supply system
    • F02D19/0634—Determining a density, viscosity, composition or concentration
    • F02D19/0636—Determining a density, viscosity, composition or concentration by estimation, i.e. without using direct measurements of a corresponding sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
    • F02D19/0657—Heavy or light fuel oils; Fuels characterised by their impurities such as sulfur content or differences in grade, e.g. for ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1486—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor with correction for particular operating conditions
    • F02D41/1487—Correcting the instantaneous control value
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0414—Air temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0611—Fuel type, fuel composition or fuel quality
    • F02D2200/0612—Fuel type, fuel composition or fuel quality determined by estimation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Abstract

An engine control apparatus which can ensure and maintain a stability and constant exhaust emission characteristics even in such a condition that a nature of a fuel used as present is unsure, and which is robust among different fuel natures, comprising a plurality of different nature fuel quantity computing means and an operating condition detecting means for detecting an operating condition of an engine, wherein a first nature fuel quantity computing means among the plurality of different nature fuel quantity computing means is used as a fuel quantity computing means during an engine start, and the fist nature fuel quantity computing means is forcibly changed over into a second nature fuel quantity computing means if an engine operating condition detected by the operating condition detecting means satisfies a predetermined term.

Description

The control gear of motor
Technical field
[0001]
The present invention relates to control gear that the motor (internal-combustion engine) of lift-launchs such as automobile is controlled, particularly in the indefinite situation of proterties (heavy, lightweight etc.), also can guarantee to keep to fuel stability and certain exhaust spray characteristic, to the control gear of the thick motor of fuel character difference.
Background technique
[0002]
In recent years, be accompanied by the reinforcement to the exhaust restriction of engine for automobile such as North America, Europe, Japan, people require further to reduce engine exhaust and spray.The high precision int progress of the high performance of catalyzer and catalyzer control is swift and violent, is sprayed by the exhaust that motor is discharged, and the amount of discharging during startup is dominant.In general, fuel has the deviation of certain proterties, and the fuel gasification rate during low temperature changes along with the difference of its proterties.Because for fuel injection amount, the combustion fuel amount is along with the combustion gasification rate changes, so startability and exhaust performance (exhaust spray characteristic) when the fuel character difference affects engine start.Therefore, for example in following patent documentation 1,2 etc., also can see like that, in the prior art, detect or infer (judgements) fuel character, make engine control adapt to the whole bag of tricks of the fuel character of actual use, come out.
[0003]
Patent documentation 1: the spy opens flat 8-177553 communique
Patent documentation 2: the spy opens the 2001-41094 communique
[0004]
In other words, in described patent documentation 1, announced possess calculate heavy fuel with the unit of fuel quantity, calculate the control gear of light Fuel with the motor of unit, fuel character identifying unit and the switching unit (this switching unit switches to light Fuel by heavy fuel with fuel quantity calculating unit and calculates the unit with fuel quantity) of fuel quantity when judging that use fuel is lightweight., in this patent documentation 1 described control gear,, its initial setting uses because becoming heavy, so when using light Fuel, till being confirmed to be lightweight, sprayed considerable fuel, thereby make air-fuel ratio become enriching, the exhaust spray characteristic worsens.In addition, though on the basis of above-mentioned situation, used the method for judging fuel character according to the rotation change of motor, but as shown in figure 13, after using light Fuel under the state that heavy usefulness is set, to compare during with the use heavy fuel, air-fuel ratio changes to the rich oil side.And when air fuel ratio changed to the rich oil side, the rotation change did not but produce very big difference.This is because compare with chemically correct fuel, does not have the cause of very big variation in rich oil side torque (pressure cylinder in).So, judge fuel character according to rotation change, on principle, be difficult to carry out, carry out the fuel injection with heavy with setting, so the deterioration of exhaust spray characteristic is unescapable when being lightweight can not judging.
[0005]
In addition, in described patent documentation 2, announced and possessed 1st start-up control unit corresponding and the 2nd start-up control unit corresponding with heavy fuel with light Fuel, in the time of can not finishing to start at the appointed time, switch to the control gear of the motor of the 2nd start-up control unit by the 1st start-up control unit., in these patent documentation 2 described control gear, because lightweight becomes initial setting with setting, so when using heavy fuel, startability worsens, and also influences value of the product and reliability sometimes.In addition, when the rate of gasification of heavy fuel is extremely bad, also exists the fuel that does not produce incipient detonation, injection and under unburned state, just be discharged to the problem of outside, the deterioration of exhaust spray characteristic.
Summary of the invention
[0006]
The present invention is at the problems referred to above of prior art and develop.Its purpose be to be provided at also can guarantee in the indefinite situation of proterties (heavy, lightweight etc.) to fuel to keep stability and certain exhaust spray characteristic, to the control gear of the thick motor of fuel character difference.
[0007]
In order to reach described purpose, in the 1st sample attitude of the control gear of the motor that the present invention relates to, possess a plurality of fuel characters and detect the unit with the operating condition that detects the operating condition of motor with fuel quantity calculating unit, when engine start, the amount of acting as a fuel computing unit, the 1st fuel character that uses described a plurality of fuel quantity to calculate in the unit calculates the unit with fuel quantity; Behind engine start, detect the operating condition of the motor that the unit detects according to described operating condition, calculate the unit by described the 1st fuel character with fuel quantity and switch to described the 2nd fuel character and calculate unit (with reference to Fig. 1) with fuel quantity.
[0008]
If use object lesson to tell about, so for example now the 1st fuel character is calculated the fuel quantity of using as heavy the unit with fuel quantity and calculate the unit, the 2nd fuel character is calculated the fuel quantity of using as lightweight the unit with fuel quantity calculate the unit.Incunabulum during startup, using heavy to calculate the unit with fuel quantity is that the 1st fuel character calculates the unit with fuel quantity, so that satisfy startability.Then, behind the engine start, when the operating condition of motor satisfies defined terms, for example confirmed or judged when motor has carried out sufficient startups that no matter what proterties the fuel of actual use is, all switches to lightweight and calculates the unit with fuel quantity quick-fried.
[0009]
Like this, incunabulum when starting, calculate the unit computing fuel level with heavy with fuel quantity, for example intact quick-fried after, forcibly calculate the unit computing fuel level with fuel quantity, thereby when reality is used heavy fuel, can satisfy startability with lightweight, and when reality is used light Fuel, the deterioration of exhaust spray characteristic can be suppressed to inferior limit.In addition, though because the incunabulum when starting also uses heavy to calculate the unit with fuel quantity, so when the fuel of reality use was lightweight, deterioration to a certain degree can appear in the exhaust spray characteristic.But be based on following reason (with reference to Figure 14), in fact the deterioration of exhaust spray characteristic can be suppressed to inferior limit.
[0010]
Figure 14 represents only to have made the fuel injection quantities till quick-fried (2 circulations after the startup) to increase (making 4 grades of variations of increasing amount), with intact quick-fried later fuel injection quantities as after amount all roughly the same under all conditions, according to each circulation, the result of burning (exhaust) air fuel ratio till 40 circulations of instrumentation after start.As shown in Figure 14: when fuel quantity till quick-fried was changed, like this, air-fuel ratio changed to and starts till about 40 circulations in back.This be because arrived quick-fried till, the fuel of supplying with nearly all becomes air suction way (intakeport) wall stream, be accompanied by that air pressure in the air suction way after quick-fried descends and the temperature of gas air valve, air suction way etc. rises and gasifies, flowed into the cause of cylinder (burning cavity) internal combustion.Hence one can see that: set heavy for and use even will arrive fuel quantity till quick-fried, arrived the most of fuel that sprays till quick-fried and also flowed into the burning cavity burning in intact quick-fried back, if so consider this influx, set the fuel quantity after intact quick-fried for the best with lightweight, even when using light Fuel so, also the deterioration of exhaust spray characteristic can be suppressed to inferior limit.
[0011]
On the other hand, when the actual fuel that uses is heavy, the fuel quantity that forcibly adopts lightweight to use after intact quick-fried, thus might make oil-poorization of air-fuel ratio, destroy stability (combustion stability etc.).At this moment, adopt the structure of the 9th sample attitude～the 13rd sample attitude record of hereinafter telling about, stop the deterioration of stability.In addition, as previously mentioned, use in reality on the basis of light Fuel, when using the setting computing fuel level,, produce moment and very big difference can not occur, so very difficult judgement fuel character is a lightweight on principle owing to be the air fuel ratio enriching with heavy.Different therewith, use in reality on the basis of heavy fuel, when using the setting computing fuel level,, be heavy so judge fuel character easily because oil-poorization of air fuel ratio produces moment and descend greatly with lightweight.
[0012]
In the 2nd sample attitude of the control gear that the present invention relates to, described operating condition detects the unit, detect at least one in total suction air quantity, inhalation temperature, engine cooling water temperature and the air fuel ratio behind period behind transit time behind engine revolution, the engine start, the engine start, air suction way internal pressure, the engine start, when this operating condition that detects satisfies defined terms, switch to described the 2nd fuel character by described the 1st fuel character with fuel quantity calculating unit and calculate unit (with reference to Fig. 2) with fuel quantity.
[0013]
In other words, switch to lightweight and calculate with fuel quantity in the judgement whether condition of unit set up forcibly calculating the unit with fuel quantity, clearly record and narrate and to use engine revolution etc. by heavy.
[0014]
In the 3rd sample attitude of the control gear that the present invention relates to, described the 2nd fuel character calculates the unit with fuel quantity, calculates than described the 1st fuel character and calculates the fuel quantity (with reference to Fig. 3) that quantity of units is lacked with fuel quantity.
[0015]
In other words, as previously mentioned, clearly recording and narrating the 1st fuel character and calculate the unit with fuel quantity, is that the low fuel of rate of gasification is used (fuel quantity that heavy is used); The 2nd fuel character calculates the unit with fuel quantity, is that the high fuel of rate of gasification is used (fuel quantity that lightweight is used).
[0016]
In the 4th sample attitude of the control gear that the present invention relates to, behind the engine start, when engine revolution is lower than the specified value of predesignating, or behind the engine start transit time than the stipulated time of predesignating in short-term, calculate the unit by described the 1st fuel character with fuel quantity and carry out the calculating of fuel quantity; When engine revolution is higher than the specified value of predesignating, or when the transit time is longer than stipulated time of predesignating behind the engine start, calculates the unit by described the 2nd fuel character with fuel quantity and carry out the calculating of fuel quantity
(with reference to Fig. 4).
[0017]
Like this, for example because illustration the fuel quantity forcibly used by heavy calculate the unit, switch the condition that fuel quantity that lightweight uses calculates the unit, so as the engine revolution that should switch (specified value), 600～1000rpm is its roughly target.In addition, in the transit time after the startup that should switch, 0.8～1.5s is its roughly target.
[0018]
In the 5th sample attitude of the control gear of the motor that the present invention relates to, having the air quantity of directly or indirectly obtaining the cylinder amount of air drawn detects/infers the unit and detect/infer the basic fuel quantity calculating unit that the air quantity of obtaining the unit is calculated fuel quantity according to this air quantity; Described the 1st fuel character calculates the unit with fuel quantity, has the 1st fuel character fuel increment unit of the increment correction of the fuel quantity that carries out described basic fuel quantity calculating unit calculating; Described the 2nd fuel character calculates the unit with fuel quantity, and the 2nd fuel character with increment correction of lacking with the fuel increment quantity of units than described the 1st fuel character is with fuel increment unit (with reference to Fig. 5).
[0019]
In other words, detect the suction air quantity, suck this suction air quantity, for example calculate the basic fuel quantity that becomes the fuel quantity that is equivalent to chemically correct fuel, for this basic fuel quantity, switch to the fuel increment correction of the 2nd fuel character with the fuel increment correction by the 1st fuel character.
[0020]
In the 6th sample attitude of the control gear of the motor that the present invention relates to, described the 1st fuel character calculates the unit with fuel quantity, calculates the fuel quantity that heavy fuel is used; Described the 2nd fuel character calculates the unit with fuel quantity, calculates the fuel quantity that light Fuel is used.
[0021]
In other words, clearly recording and narrating the 1st fuel character is heavy, and the 2nd fuel character is a lightweight.
[0022]
In the 7th sample attitude of the control gear of the motor that the present invention relates to, described the 1st fuel character calculates the unit with fuel quantity, calculates the fuel quantity that heavy fuel is used; Described the 2nd fuel character calculates the unit with fuel quantity, the fuel quantity that the fuel of the centre of calculating heavy and lightweight is used.
[0023]
In other words, by heavy with setting---the 1st fuel character calculates the unit and switches to when the 2nd fuel character calculates the unit with fuel quantity with fuel quantity, with the 2nd fuel character with fuel quantity calculate the unit as lightweight with after setting, when using heavy fuel, stability might severe exacerbation.Therefore, in this sample attitude, with than the lightweight setting of heavy side a little, carry out of the calculating of the 2nd fuel character, thereby the stability when suppressing to use heavy fuel worsens with fuel quantity.But the exhaust spray characteristic when using light Fuel but will worsen slightly.
[0024]
In the 8th sample attitude of the control gear of the motor that the present invention relates to, described the 1st fuel character calculates the unit with fuel quantity, calculates the fuel quantity that heavy fuel is used; The 3rd fuel character calculates the unit with fuel quantity, calculates the fuel quantity that light Fuel is used; Described the 2nd fuel character calculates the unit with fuel quantity, calculates than the described light Fuel fuel quantity used of the fuel of lightweight more; Behind the engine start, detect the operating condition of the motor that the unit detects according to described operating condition, switch to described the 2nd fuel character by described the 1st fuel character with fuel quantity calculating unit and calculate the unit, switch to described the 3rd fuel character by described the 2nd fuel character with fuel quantity calculating unit again and calculate unit (with reference to Fig. 8) with fuel quantity with fuel quantity.
[0025]
In other words, as previously mentioned, since arrived quick-fried till, major part in the fuel that sprays is in intact quick-fried after-combustion, so when adopting the 2nd fuel character that after the 1st fuel character is with fuel quantity calculating unit, is switched to calculate the unit computing fuel level with fuel quantity, need consider that the fuel that sprays till quick-fried flows into the situation of burning cavity, at this moment, need set for than lightweight with setting more lightweight side.In addition, the fuel that becomes wall stream in the intact fuel that sprays till quick-fried also as shown in figure 14, nearly all burnedly about about 40 circulations falls, so later on so switch to the 3rd fuel character be lightweight with after setting, can make air-fuel ratio (exhaust) optimization.
[0026]
In the 9th sample attitude of the control gear of the motor that the present invention relates to, possesses the fuel character identifying unit of judging fuel character, calculating the unit by described the 1st fuel character with fuel quantity switches to after described the 2nd fuel character calculates the unit with fuel quantity, described fuel character identifying unit judges that fuel character is during than described the 2nd fuel character heavy, switches to described the 1st fuel character and calculates unit (with reference to Fig. 7) with fuel quantity.
[0027]
As above-mentioned the 1st sample attitude is told about, intact forcibly switch to the fuel quantity that lightweight uses after quick-fried after, when reality uses fuel to be heavy, oil-poorization of air-fuel ratio, stability are worsened.Therefore, in this sample attitude, appended the function that stops stability to worsen.In other words, appended and switched to the 2nd fuel character calculates unit (lightweight with set) with fuel quantity after, judge that the actual fuel that uses is the unit of heavy, utilize this fuel character identifying unit, judge when the fuel that uses is heavy that switching to the heavy fuel setting once more is that the 1st fuel character calculates the unit with fuel quantity.As the method for judging fuel character, will enumerate in the 10th sample attitude～the 13rd sample attitude later.But as mentioned before, use in reality under the situation of light Fuel, when using the setting computing fuel level,, produce moment and very big difference can not occur, so very difficult judgement fuel character is a lightweight on principle owing to be the air fuel ratio enriching with heavy.Different therewith, use in reality on the basis of heavy fuel, when using the setting computing fuel level,, be heavy so judge fuel character easily because oil-poorization of air fuel ratio produces moment and descend greatly with lightweight.
[0028]
In the 10th sample attitude of the control gear of the motor that the present invention relates to, described fuel character identifying unit reaches required time of predetermined angular rotation and at least one in the air fuel ratio according to engine revolution, motor, judges fuel character.
[0029]
In the 11st sample attitude of the control gear of the motor that the present invention relates to, described fuel character identifying unit reaches differential value and/or the second differential value of required time of predetermined angular rotation according to engine revolution or motor, judges fuel character.
[0030]
In the 12nd sample attitude of the control gear of the motor that the present invention relates to, described fuel character identifying unit, a more described differential value and the specified value of predesignating according to its size, are judged fuel character.
[0031]
In the 13rd sample attitude of the control gear of the motor that the present invention relates to, described fuel character identifying unit, more described second differential value and the specified value of predesignating according to its size, are judged fuel character.
[0032]
In other words, as shown in Figure 8, for example engine evaluated revolution or motor reach predetermined angular rotation a differential value, the second differential value of required time (rotation needed time), thereby when setting the use heavy fuel, can detect the moment decline that empty oil-poorization of combustion causes with light Fuel.At this moment, by Fig. 8 also as can be known: in the time of can detecting moment and descend and subsequent both of when recovery.
[0033]
In addition, as described in the 10th sample attitude, for example can also be according to spraying from fuel, the responsiveness till burning (exhaust) air fuel ratio, judgement fuel character.
[0034]
In the 14th sample attitude of the control gear of the motor that the present invention relates to, possesses the fuel character confirmation unit, this fuel character confirmation unit judges that at described fuel character identifying unit fuel character is during than the 2nd fuel character heavy, calculating the unit by described the 2nd fuel character with fuel quantity switches to after described the 1st fuel character calculates the unit with fuel quantity, carry out the judgement of fuel character by described fuel character identifying unit once more, confirm the proterties (with reference to Fig. 9) of the actual fuel that uses.
[0035]
In other words, as mentioned the 1st sample attitude and the 9th sample attitude told about like that, forcibly switch to the fuel quantity that lightweight uses after intact quick-fried after, when reality uses fuel to be heavy, oil-poorization of air-fuel ratio, stability are worsened.But the reason that stability worsens it is also conceivable that oil-poorization of the air fuel ratio factor in addition that heavy fuel causes at this moment.Therefore, switching to heavy is after the 1st fuel character calculates the unit with fuel quantity with setting, for example adopt the 10th sample attitude～described modes such as the 13rd sample attitude once more, carrying out fuel character judges, switching to after the 1st fuel character calculates the unit with fuel quantity, when for example the rotation change is calmed down, judge the heavy really of (confirming to assert).If switch to after the 1st fuel character calculates the unit with fuel quantity, when for example the rotation change is not calmed down yet, the stability decreases that causes with setting reason in addition as heavy just.
[0036]
In the 15th sample attitude of the control gear of the motor that the present invention relates to, calculating the unit by described the 2nd fuel character with fuel quantity switches to after described the 1st fuel character calculates the unit with fuel quantity, the result of determination of described fuel character identifying unit, when changing, assert that the proterties of the actual fuel that uses is heavy (with reference to Figure 10) with the result of determination of carrying out earlier.
[0037]
In other words, as the 14th sample attitude is told about, if actual use fuel is heavy, the 2nd fuel character calculates the 1st time the fuel character result of determination that the unit carries out in carrying out with fuel quantity, just and once more switches to the 2nd time the fuel character result of determination that the 1st fuel character carries out after with fuel quantity calculating unit and difference occurs.Like this, the result of determination after the switching, with the result of determination of before having carried out not simultaneously, can assert that fuel character is a heavy.
[0038]
In the 16th sample attitude of the control gear of the motor that the present invention relates to, possesses the proterties of the fuel of the actual use of judging according to described fuel character identifying unit, the unit of the Control Parameter of calculation engine (with reference to Figure 11).
[0039]
In other words, when described fuel character identifying unit has been judged the fuel character of actual use,, calculate the Control Parameter of motors such as ignition timing, fuel injection amount, fuel injection timing according to the fuel character of this identification.The optiumum control that can meet like this, fuel character.
[0040]
In the 17th sample attitude of the control gear of the motor that the present invention relates to, described control parameters of engine computing unit calculates the Control Parameter of all cylinders of the Control Parameter controlled according to each cylinder or unified control.
[0041]
In the 18th sample attitude of the control gear of the motor that the present invention relates to, described fuel character identifying unit is also considered the startup zero hour from motor, to through the engine revolution till the stipulated time dynamically, judge the proterties of the actual fuel that uses.
[0042]
In other words, we know: the later revolution of needed time, the incipient detonation till incipient detonation in for example during engine start rise dynamically and fuel character, have certain association.According to using this related result of determination and using the result of determination of engine revolution that the 10th～13 sample attitude records and narrates etc., judge fuel character after, can further improve the judgement precision.
[0043]
In the 19th sample attitude of the control gear of the motor that the present invention relates to, according to the startup zero hour from motor, to through the engine revolution till the stipulated time dynamically, adjust judgement that described fuel character identifying unit uses with parameters such as threshold values.
[0044]
In other words, as previously mentioned, we know: the dynamic and fuel character that the later revolution of needed time, the incipient detonation till incipient detonation in during engine start rises has certain association.According to using this related result of determination, for example think when the possibility of heavy is high, the parameter that described fuel character identifying unit is used for example decision threshold set low after, just can obtain result of determination quickly.
[0045]
In the 20th sample attitude of the control gear of the motor that the present invention relates to, described operating condition detects the unit, as the operating condition behind the engine start, detects and sucks air quantity, fuel injection amount and exhaust air-fuel ratio (with reference to Figure 11).
[0046]
In other words, as shown in figure 14, arrived quick-fried till, the fuel of supply nearly all becomes air suction way wall stream, the temperature that has been accompanied by air pressure decline in the air suction way after quick-fried and Aspirating valves, air suction way etc. rises and gasifies, inflow burning cavity internal combustion.But it is till starting about 40 circulations in back.According to supply air fuel ratio and the exhaust air-fuel ratio that based on fuel emitted dose and air quantity are calculated, detect onboard that this is dynamic, will calculate the unit with fuel quantity by described the 1st fuel character and switch to described the 2nd fuel character calculates the unit with fuel quantity moment optimization.
[0047]
In the 21st sample attitude of the control gear of the motor that the present invention relates to, in described various kinds attitude, do not exist with ... actual fuel character, carry out the switching that fuel quantity calculates the unit.
[0048]
In other words, as mentioned above, no matter what the actual fuel character of the present invention is, as long as rated condition is set up behind engine start, just forcibly fuel quantity being calculated the unit for example switches to lightweight fuel injection amount computing unit by heavy with the fuel injection amount computing unit, like this, if use the control gear that the present invention relates to, just can observe the dynamic of 15 sample attitudes record.
[0049]
On the other hand, the automobile that the present invention relates to is characterized in that: carry and adopt aforesaid engine controlling unit.
[0050]
After adopting the present invention, when engine start,, use heavy to calculate the unit with fuel quantity in order to satisfy startability; Behind the engine start, when the operating condition of motor satisfies defined terms, for example confirmed when quick-fried no matter what proterties the actual fuel that uses is, all forcibly calculated the unit with fuel quantity and switch to lightweight and calculate the unit with fuel quantity by heavy.So, actual when using heavy fuel, can satisfy startability, and actual when using light Fuel, the deterioration of exhaust spray characteristic can be suppressed to inferior limit.Therefore, can be provided to also can guarantee in the indefinite situation of the proterties of fuel to keep stability and certain exhaust spray characteristic, to the control gear of the thick motor of fuel character difference.
Description of drawings
Fig. 1 is for the figure of the 1st sample attitude of the control gear of telling about the motor that the present invention relates to.
Fig. 2 is for the figure of the 2nd sample attitude of the control gear of telling about the motor that the present invention relates to.
Fig. 3 is for the figure of the 3rd sample attitude of the control gear of telling about the motor that the present invention relates to.
Fig. 4 is for the figure of the 4th sample attitude of the control gear of telling about the motor that the present invention relates to.
Fig. 5 is for the figure of the 5th sample attitude of the control gear of telling about the motor that the present invention relates to.
Fig. 6 is for the figure of the 8th sample attitude of the control gear of telling about the motor that the present invention relates to.
Fig. 7 is for the figure of the 9th sample attitude of the control gear of telling about the motor that the present invention relates to.
Fig. 8 is for the figure of the 10th sample attitude～the 13rd sample attitude of the control gear of telling about the motor that the present invention relates to.
Fig. 9 is for the figure of the 14th sample attitude of the control gear of telling about the motor that the present invention relates to.
Figure 10 is for the figure of 15 sample attitudes of the control gear of telling about the motor that the present invention relates to.
Figure 11 is for the figure of the 16th sample attitude of the control gear of telling about the motor that the present invention relates to.
Figure 12 is for the figure of the 20th sample attitude of the control gear of telling about the motor that the present invention relates to.
Figure 13 is expression heavy fuel and the light Fuel air fuel ratio in separately and the plotted curve of the relation of diagram mean effective pressure.
Figure 14 is the fuel quantity till two circulations that make behind the engine start when changing, the figure of the variation of the air fuel ratio till 40 circulations behind the engine start.
Figure 15 is the brief configuration figure of the motor used of each mode of execution of the control gear that the present invention relates to of expression.
Figure 16 is the figure of internal structure of the controller main part of expression the 1st mode of execution.
Figure 17 is the control system figure of the 1st mode of execution.
Figure 18 is for the figure of telling about the basic fuel injection amount arithmetic element in the 1st mode of execution.
Figure 19 is for the figure of telling about the fuel reduction value arithmetic element in the 1st mode of execution.
Figure 20 is for the figure of telling about the fuel reduction value switching determination unit in the 1st mode of execution.
Figure 21 is for the figure of telling about the fuel reduction value arithmetic element in the 2nd mode of execution.
Figure 22 is for the figure of telling about the fuel reduction value switching determination unit in the 2nd mode of execution.
Figure 23 is the control system figure of the 3rd mode of execution.
Figure 24 is for the figure of telling about the fuel reduction value switching determination unit in the 3rd mode of execution.
Figure 25 is for the figure of telling about the fuel character identifying unit in the 3rd mode of execution.
Figure 26 is the control system figure of the 4th mode of execution.
Figure 27 is for the figure of telling about the fuel character confirmation unit in the 4th mode of execution.
Embodiment
[0051]
Below, with reference to accompanying drawing, tell about the mode of execution of the control gear of motor of the present invention.
Figure 15 be the motor that will the present invention relates to control gear mode of execution (each mode of execution is common) and adopt a brief configuration figure that example is represented together of its vehicle mounted motor.
[0052]
Illustrated motor 10 is the multicylinder engines with 4 cylinder #1, #2, #3, #4 (with reference to Figure 17), has oil cylinder 12 and inserts this each cylinder #1, #2, the interior piston 15 of #3, #4 sliding freely, above this piston 15, constitutes burning cavity 17.In the burning cavity 17 of each cylinder #1, #2, #3, #4, subtend is being provided with spark plug 35.
[0053]
Air for fuel combustion, air-strainer 21 by the top that is arranged on air intake passage 20 sucks, behind pneumatic sensor 24, automatically controlled throttle valve 25, enter trap 27, again from this trap 27, the Aspirating valves 28 of the downstream by being configured in described air intake passage 20 is done media, is inhaled into the burning cavity 17 of each cylinder #1, #2, #3, #4.In addition, in the downstream part of described air intake passage 20 (intakeport), Fuelinjection nozzle 30 is being set.
[0054]
The mixed gas of burned chamber 17 inhaled airs and the fuel that sprayed by Fuelinjection nozzle 30, the spark ignition after-combustion that is produced by spark plug 35, its waste gas after burning (exhaust), by burning cavity 17, being situated between has outlet valve 48, is discharged into indivedual passage portion 40A (with reference to Figure 17) of the upstream portion that forms exhaust passageway 40, from these indivedual passage portion 40A by the exhaust set 40B of portion, in the three-way catalyst 50 that inflow is equipped with, be discharged to the outside after the purification on exhaust passage 40.
[0055]
In addition, the downstream side of the three-way catalyst 50 in exhaust passage 40 is disposing oxygen sensor 52, in the exhaust set 40B of portion that is in upstream side than the catalyzer in the exhaust passage 40 50, is disposing A/F (air fuel ratio) sensor 51.
[0056]
Described air-fuel ratio sensor 51, the concentration of oxygen to comprising in the exhaust has linear output character.The oxygen concentration in the exhaust and the relation of air fuel ratio, roughly linear, so utilize the air-fuel ratio sensor 51 that detects oxygen concentration, can obtain the air fuel ratio among the described exhaust set 40B of portion.In controller assemblies 100 (hereinafter telling about),, obtain the air fuel ratio of the upstream of three-way catalyst 50 according to signal from air-fuel ratio sensor 51; According to the signal from oxygen sensor 52, obtaining for the oxygen concentration in the downstream of three-way catalyst 50 or theoretical mixture gas is rich oil proportions of ingredients or oil-poor proportions of ingredients.In addition, use the output of two sensors 51,52, revise fuel injection amount or air quantity one by one, so that make the purification efficiency of three-way catalyst 50 become the best.
[0057]
In addition, arrange a part of waste gas that is dealt into exhaust passage 40, as required, do media, be imported into air intake passage 20, do media by the fork passage portion of air intake passage 20 again, be back to the burning cavity 17 of each cylinder by EGR passage 41 by burning cavity 17.In described EGR passage 41, be installed with in order to adjust the EGR valve 42 that EGR leads.
[0058]
Then, in the control gear 1 of present embodiment,, has built-in control of microcomputer device assembly 100 for motor 10 is carried out various controls.
[0059]
Controller assemblies 100 basically as shown in figure 16, is made of CPU101, input circlult 102, output inlet 103, RAM104, ROM105 etc.
[0060]
In controller assemblies 100, as input signal, supply with the corresponding signal of suction air quantity that detects with pneumatic sensor 24, the corresponding signal of aperture of the throttle valve 25 that detects with throttling sensor 34, the signal of rotation (engine revolution) phase place of the bent axle 18 that expression CKP (tachometer generator) 37 obtains (for example changing 1 output signal pulses when spending) in each angle of rotation by CKP 37, is the rich oil proportions of ingredients or the signal of oil-poor proportions of ingredients from the expression of the oxygen sensor 52 in the downstream side that is configured in the three-way catalyst 50 in the exhaust passage 40 for the oxygen concentration in the downstream of three-way catalyst 50 or theoretical mixture gas, with the corresponding signal of oxygen concentration (air fuel ratio) in the waste gas that the air-fuel ratio sensor 51 of the exhaust set 40B of portion of upstream side of catalyzer 50 in being configured in exhaust passage 40 detects, the corresponding signal of engine coolant temperature that detects with cooling-water temperature sensor 19 in being configured in oil cylinder 12, the corresponding signal of the amount of entering into (torque that the expression driver requires) of the accelerator pedal 39 that obtains with accelerator pedal sensor 36, the signal that the speed of a motor vehicle of the automobile of this motor 10 of lift-launch that obtains with vehicle speed sensor 29 is corresponding etc.
[0061]
In controller assemblies 100, be transfused to the output of each sensor such as air-fuel ratio sensor 51, oxygen sensor 52, throttling sensor 34, pneumatic sensor 24, CKP 37, cooling-water temperature sensor 19, accelerator pedal sensor 36, output according to these sensors, the operating condition of controller assemblies 100 identification of Engine, according to this operating condition, calculate the main operation amount of motors such as sucking air quantity, fuel injection amount, ignition timing.The fuel injection amount that controller assemblies 100 calculates is transformed into out the valve pulse signal, sends to Fuelinjection nozzle 30 by Fuelinjection nozzle drive circuit 117.In addition, also drive signal is sent to spark plug 35 by igniting output circuit 116, so that light a fire at the ignition timing of controller assemblies 100 calculating.
[0062]
In more detail, in controller assemblies 100, after the signal processing of removing denoising etc. in the input circlult 102, send to output inlet 103.The value of inlet opening is by RAM104 keeping, in CPU101 by computing.Record and narrate the control program of computing content, write ROM105 in advance.Expression after the RAM104 keeping, sends to delivery outlet 103 according to the value of each operation amount of control program calculating.
[0063]
Actuating signal for spark plug 35, being provided in primary winding in the igniting output circuit 116 becomes ON, the non-ONOFF signal that becomes OFF when through-flow when through-flow.Ignition timing is the moment that becomes OFF from ON.Be output the signal of spark plug 35 usefulness that inlet 103 sets, in igniting output circuit 116, be exaggerated into the required enough energy of igniting after, supply with spark plug 35.In addition, the drive signal of Fuelinjection nozzle 30 (opening the valve pulse signal), ON when being configured to out valve, the ONOFF signal of OFF when closing valve, in Fuelinjection nozzle drive circuit 117, be exaggerated the energy that becomes to be enough to open Fuelinjection nozzle 30 after, fueling injection valve 30.Realize the drive signal of the target aperture of automatically controlled throttle valve 25,, send to automatically controlled throttle valve 25 through behind the automatically controlled throttle valve drive circuit 118.
[0064]
Below, specifically tell about the contents processing that controller assemblies 100 is carried out.
[0065]
[the 1st mode of execution]
Figure 17 is the control system figure of the 1st mode of execution, and controller assemblies 100 possesses basic fuel injection amount (Tp) arithmetic element 120, fuel reduction value (Tp_hos) arithmetic element 125 and fuel reduction value and is switched and determined unit 130 shown in functional-block diagram.
[0066]
Here, the Tp_hos that basic fuel injection amount Tp and fuel reduction value arithmetic element are calculated multiplies each other, and calculates fuel injection amount Ti, so that make the air fuel ratio of all cylinders become required air fuel ratio.The Tp_hos that fuel reduction value arithmetic element 125 is calculated becomes along with fuel character.In more detail, with in setting, determine fuel injection amount at heavy morely; With in setting, less determine fuel quantity with setting in lightweight than described heavy.With setting to the switching of lightweight with setting, the based on fuel reduction value is switched and determined the switching curve f_change decision of setting unit 130 by heavy.In more detail, irrelevant during startup with the fuel character of reality, all the time as heavy with setting, the rated condition after the startup is set up back (details aftermentioned), forcibly switches to lightweight with setting.
Below, tell about each processing unit in detail.
[0067]
＜basic fuel injection amount arithmetic element 120 (Figure 18) 〉
In this arithmetic element 120, according to the suction air quantity of motor, calculate in operating condition arbitrarily, realize the fuel injection amount of target torque and target air-fuel ratio simultaneously.Specifically, as shown in figure 18, calculate basic fuel injection amount Tp.When intact quick-fried establishments, when being false, calculate basic fuel injection amount respectively.Intact quick-fried establishment, for example be that engine revolution becomes that specified value is above, specified time limit consecutive hours etc.
[0068]
Intact quick-fried when being false, with engine coolant temperature (Twn) and engine revolution (Ne), calculate basic fuel injection amount.In addition, the k in the formula of the basic fuel injection amount Tp when intact quick-fried is a constant, is the value that is adjusted to the realization theory air fuel ratio for sucking air quantity all the time, and in addition, Cy1 represents the number of cylinders of motor.
[0069]
＜fuel reduction value arithmetic element 125 (Figure 19) 〉
In this arithmetic element, computing fuel reduction value Tp_hos.Specifically, as shown in figure 19, switch curve f_change, during f_change=0, as heavy reduction value (Tp_hos_jyu), during f_change=1, as lightweight reduction value (Tp_hos_kei) according to the fuel injection amount reduction value.Heavy, is set according to water temperature (Twn) as the parameter of representing the sensitivity of fuel gasification rate with reduction value Tp_hos_jyu and lightweight reduction value Tp_hos_kei.And then, also can use air-breathing temperature.
[0070]
As previously mentioned, switch to lightweight with after setting by heavy with setting, when the actual fuel that uses was heavy, stability might severe exacerbation.Lightweight reduction value Tp_hos_kei can set for than lightweight a little near the heavy side, thus the deterioration when suppressing heavy.But the exhaust spray characteristic when using light Fuel worsens a little.
[0071]
＜fuel reduction value is switched and determined unit 130 (Figure 20) 〉
In this arithmetic element 130, computing fuel emitted dose reduction value is switched curve f_change.Specifically, in processing shown in Figure 20, decision f_change.As previously mentioned, fuel injection amount reduction value switching curve f_change decision is forcibly switched to the moment of lightweight with setting with setting by heavy.As this condition constantly of decision, various considerations are arranged.But as an example, enumerate 6 conditions here.That is:
Does starting back time T sidou become more than the specified value T_sidou0?
Does Tp aggregate-value Tp_sum after the startup become more than the specified value Tp_sum0?
Does Qa aggregate-value Qa_sum after the startup become more than the specified value Qa_sum0?
Does Ne after the startup become more than the specified value Ne_0 for the first time?
Does Twn after the startup become more than the specified value Twn_0 for the first time?
Does Twa after the startup become more than the specified value Twa_0 for the first time?
Above-mentioned each specified value can be according to the experiment decision.Because switched to the moment of lightweight with setting with setting by heavy, preferably engine start finishes period, so for example can use quick-fried judgement.
[0072]
[the 2nd mode of execution]
In the 1st mode of execution, irrelevant during startup with the fuel character of reality, use as heavy all the time and set, after the rated condition after the startup is set up, forcibly switch to lightweight with setting.
[0073]
On the other hand, as previously mentioned, since arrived quick-fried till, major part in the fuel that sprays is in intact quick-fried after-combustion, so the setting value that after heavy is set, is switched, need consider quick-fried till the situation of fuel inflow of injection, but in the present embodiment, after considering it, set for than lightweight with setting more lightweight side.In addition, the fuel that becomes wall stream in the intact fuel that sprays till quick-fried also as shown in figure 14, nearly all burnedly about about 40 circulations falls, so later on and then switch to lightweight with after setting, can make air-fuel ratio (exhaust) optimization.
[0074]
The control system of present embodiment, basic identical with the 1st mode of execution shown in Figure 17, basic fuel injection amount arithmetic element 120 is common, but the contents processing of fuel reduction value arithmetic element and fuel reduction value switching determination unit is different with the 1st mode of execution.
[0075]
Below, tell about the contents processing that fuel reduction value arithmetic element 225 and fuel reduction value are switched and determined unit 230 in detail.
[0076]
＜fuel reduction value arithmetic element 225 (Figure 21) 〉
In this arithmetic element 225, computing fuel reduction value Tp_hos.Specifically, as shown in figure 21, switch curve f_change, during f_change=0, as heavy reduction value (Tp_hos_jyu) according to the fuel injection amount reduction value; During f_change=1, as lightweight reduction value 1Tp_hos_kei1; During f_change=2, as lightweight reduction value 2Tp_hos_kei2.Heavy,, is set according to water temperature (Twn) as the parameter of representing the sensitivity of fuel gasification rate with reduction value 1Tp_hos_kei1 and lightweight reduction value 2Tp_hos_kei2 with reduction value Tp_hos_jyu, lightweight.And then, also can use air-breathing temperature.
[0077]
As previously mentioned, since arrived quick-fried till, major part in the fuel that sprays is in intact quick-fried after-combustion, so setting value that after heavy is set, is switched (lightweight reduction value 1), need consider the situation that the fuel that sprays till quick-fried flows into, at this moment, preferably set for than original lightweight with setting (lightweight reduction value 2) more lightweight side.In addition, the fuel that becomes wall stream in the intact fuel that sprays till quick-fried also as shown in figure 14, nearly all burnedly about about 40 circulations falls, can make air-fuel ratio (exhaust) optimization so later on and then switch to lightweight, with after setting (lightweight with reduction value 2).
[0078]
＜fuel reduction value is switched and determined unit 230 (Figure 22) 〉
In this arithmetic element 230, computing fuel emitted dose reduction value is switched curve f_change.Specifically, in processing shown in Figure 20, f_change is switched to 0 → 1.Because the same, so repeat no more with the 1st mode of execution.After Figure 22 represents that f_change is switched into 1, and then f_change switched to 1 → 2 processing.
[0079]
As previously mentioned, the fuel injection amount reduction value is switched curve f_change and is switched into for 1 → 2 the moment, is forcibly to switch to the moment of lightweight with setting 2 by lightweight with setting 1.As this condition constantly of decision, various considerations are arranged.But as shown in figure 22, as an example, enumerate 6 conditions here.That is:
Does starting back time T sidou become more than the specified value T_sidou0?
Does Tp aggregate-value Tp_sum after the startup become more than the specified value Tp_sum1?
Does Qa aggregate-value Qa_sum after the startup become more than the specified value Qa_sum1?
Does Ne after the startup become more than the specified value Ne_1 for the first time?
Does Twn after the startup become more than the specified value Twn_1 for the first time?
Does Twa after the startup become more than the specified value Twa_1 for the first time?
Above-mentioned each specified value can be according to the experiment decision.Because as previously mentioned, switch to lightweight with the moment of setting 2 by lightweight with setting 1, preferably the wall stream in the fuel that sprays till intact quick-fried nearly all burns before and after period, so can be according to the relation decision of supplying with air fuel ratio and exhaust air-fuel ratio.
[0080]
[the 3rd mode of execution]
In the 1st, the 2nd mode of execution, irrelevant during startup with the fuel character of reality, all the time as heavy with setting, after the rated condition after the startup is set up, forcibly switch to lightweight with setting (or switch to lightweight setting 2 by lightweight) with setting 1.
[0081]
On the other hand, as previously mentioned, forcibly switch to the fuel quantity that lightweight uses after, when reality uses fuel to be heavy, oil-poorization of air-fuel ratio, stability are worsened.At this moment, appended the function of the stability deterioration that stops motor.In other words, in the present embodiment, appended switching to lightweight with after setting, judged that the actual fuel that uses is the unit of heavy, this fuel character identifying unit is judged when the fuel that uses is heavy, switches to heavy fuel once more and sets.
[0082]
Figure 23 is the control system figure of the 3rd mode of execution, to the 1st, the 2nd mode of execution, has appended fuel character identifying unit 150.Fuel character identifying unit 150, forcibly by heavy with after switching to the fuel that lightweight uses, to carrying out the revolution signal processing, thereby detect the unstability of motor, carry out the judgement (heavy judgement) of fuel character according to it.When judgement was heavy, heavy judged that curve f_jyu becomes 1.F_jyu sends to the fuel reduction value and is switched and determined unit 130 ', during f_jyu=1, switches to heavy fuel once more and sets.In addition, the same with the 1st mode of execution, so repeat no more.Below, tell about each processing unit in detail.
[0083]
＜fuel reduction value is switched and determined unit 130 ' (Figure 24) 〉
The same with unit (130) shown in Figure 20, so repeat no more.On this basis, also appended contents processing shown in Figure 24.In other words, when f_change=1 and f_jyu=1, make f_change=0.This when judging that with the fuel character identifying unit of hereinafter telling about 150 the promptly actual fuel that uses of f_change=0 is heavy, as f_change=0, returns heavy with setting when f_change=1, switch to lightweight with after setting by heavy with setting once more.
[0084]
＜fuel character identifying unit 150 (Figure 25) 〉
In this arithmetic element 150, calculate heavy and judge curve f_jyu.Specifically, be following processing shown in Figure 25.
Calculate a differential value dNe, the second differential value ddNe of Ne respectively.
During f_change=1, promptly switch to after lightweight sets,
When dNe becomes specified value dNe_0, make the value of counter Cnt_dNe increase by 1.
DdNe becomes specified value ddNe_0_h when above, makes the value of counter Cnt_ddNe_h increase by 1.
DdNe becomes specified value ddNe_0_h when following, makes the value of counter Cnt_ddNe_l increase by 1.
The value of Cnt_dNe in stipulated time becomes more than the specified value Cnt_dNe_0, or
The value of Cnt_ddNe_h in stipulated time becomes more than the specified value Cnt_ddNe_0_h, or
The value of Cnt_ddNe_1 in stipulated time becomes specified value Cnt_ddNe_0_1 when above, judges that the fuel of actual use is heavy, as f_jyu.
Each specified value can be according to target capabilities, empirical ground (experimental ground) decision.
[0085]
[the 4th mode of execution]
In described the 3rd mode of execution, appended switching to lightweight with after setting, judge that the actual fuel that uses is the fuel character identifying unit 150 of heavy.Judge when the fuel that uses is heavy, switch to heavy fuel once more and set.
[0086]
On the other hand, in the present embodiment, as previously mentioned, intact quick-fried after, forcibly switch to the fuel quantity that lightweight uses after, when reality uses fuel to be heavy, oil-poorization of air-fuel ratio, stability are worsened.But the reason that stability worsens it is also conceivable that oil-poorization of the air fuel ratio factor in addition that heavy fuel causes at this moment.Therefore, using fuel in the judgement told about with the 3rd mode of execution is heavy and switching to after heavy fuel sets, and uses and same mode mentioned above, carries out fuel character once more to judge that rotation changes when calming down after switching, the heavy really of identification.Otherwise, if after switching to the heavy fuel setting, when the rotation change is not calmed down yet, the stability decreases that the reason beyond just setting as heavy fuel causes.
[0087]
Figure 26 is the control system figure of the 4th mode of execution, to the 3rd mode of execution, has appended fuel character identifying unit 160.Fuel character identifying unit 160, in the 3rd mode of execution, carry out fuel character and judge (heavy judgement), by lightweight with after switching to the fuel that heavy uses, signal processing engine revolution once more, thus detect the unstability of motor, at this moment, when unstability improves, assert that just the actual fuel that uses is heavy fuel.When identification was heavy, heavy judged that curve 2f_jyu_real becomes 1.F_jyu_real sends to other not shown control parameters of engine computing unit here, switches to the control parameters of engine that heavy is used.As representational parameter, the relevant parameter of ignition timing, air-fuel ratio feedback etc. is arranged.
[0088]
In addition, processing in addition, the same with the 3rd mode of execution, so repeat no more.
Below, tell about each processing unit in detail.
[0089]
＜natural fuel proterties confirmation unit 160 (Figure 27) 〉
In this confirmation unit, calculate heavy and judge curve 2f_jyu_real.Specifically, be following processing shown in Figure 27.
Calculate a differential value dNe, the second differential value ddNe of Ne respectively.
According to f_jyu=1, f_change resets to 0 with Cnt_dNe, Cnt_ddNe_h, Cnt_ddNe_l after carrying out 1 → 0 switching.
When dNe becomes specified value dNe_1, make the value of counter Cnt_dNe increase by 1.
DdNe becomes specified value ddNe_1_h when above, makes the value of counter Cnt_ddNe_h increase by 1,
DdNe becomes specified value ddNe_1_l when following, makes the value of counter Cnt_ddNe_l increase by 1.
The value of Cnt_dNe in stipulated time becomes below the specified value Cnt_dNe_l, and
The value of Cnt_ddNe_h in stipulated time becomes below the specified value Cnt_ddNe_1_h, and
The value of Cnt_ddNe_l in stipulated time becomes specified value Cnt_ddNe_1_l when following, judges that the fuel of actual use is heavy, as f_jyu_real=1.Each specified value can be according to target capabilities, empirical ground (experimental ground) decision.
[0090]
Though in the 3rd, the 4th mode of execution, be not to revise separately according to cylinder.But for example finding out because described rotation change when having only specific oil-poorization of cylinder, also can only make revising separately according to cylinder of this cylinder increase fuel and so on.
[0091]
In addition, beyond described mode of execution, as described in the 18th sample attitude, we know the dynamic and fuel character that the later revolution of needed time, the incipient detonation till incipient detonation in the engine starting process rises, and exist certain association.Can judge fuel character, thereby further improve precision according to the result of determination of utilizing this related fuel character result of determination and described fuel character identifying unit 160.In addition, as described in the 19th sample attitude,, for example think when the possibility of heavy is high according to the result of determination of utilizing correlation, the parameter that described fuel character identifying unit is used for example decision threshold set lower after, can carry out heavy as early as possible and judge.

Claims (21)

1. the control gear of a motor is characterized in that, possesses:
The 1st fuel character calculates the unit with fuel quantity, calculates the fuel quantity that heavy fuel is used;
The 2nd fuel character calculates the unit with fuel quantity, calculates the fuel quantity that light Fuel is used;
Judge the fuel character identifying unit of fuel character; With
The operating condition that detects the operating condition of motor detects the unit,
When engine start, use described the 1st fuel character to calculate the unit with fuel quantity;
Behind engine start, when the operating condition that detects the motor that the unit detects when described operating condition satisfies rated condition, no matter the actual fuel that uses is any proterties, all forcibly switch to described the 2nd fuel character with fuel quantity calculating unit and calculate the unit with fuel quantity by described the 1st fuel character
Calculate the unit by described the 1st fuel character with fuel quantity and switch to after described the 2nd fuel character calculates the unit with fuel quantity, described fuel character identifying unit is judged when fuel character is heavy, is switched to described the 1st fuel character and calculate the unit with fuel quantity.
2. the control gear of motor as claimed in claim 1, it is characterized in that: described operating condition detects the unit, detect at least one in total suction air quantity, inhalation temperature, engine cooling water temperature and the air fuel ratio behind period behind transit time behind engine revolution, the engine start, the engine start, air suction way internal pressure, the engine start, when this operating condition that detects satisfies defined terms, switch to the 2nd fuel character by described the 1st fuel character with fuel quantity calculating unit and calculate the unit with fuel quantity.
3. the control gear of motor as claimed in claim 1 or 2, it is characterized in that: described the 2nd fuel character calculates the unit with fuel quantity, calculates than described the 1st fuel character and calculates the fuel quantity that quantity of units is lacked with fuel quantity.
4. the control gear of motor as claimed in claim 1 or 2, it is characterized in that: behind the engine start, when engine revolution is lower than the specified value of predesignating, or behind the engine start transit time than the stipulated time of predesignating in short-term, calculate the unit by described the 1st fuel character with fuel quantity and carry out the calculating of fuel quantity; When engine revolution is higher than the specified value of predesignating, or when the transit time is longer than stipulated time of predesignating behind the engine start, calculates the unit by described the 2nd fuel character with fuel quantity and carry out the calculating of fuel quantity.
5. the control gear of motor as claimed in claim 1 is characterized in that: have:
The air quantity of directly or indirectly obtaining the air quantity that sucks cylinder detect/infer the unit and
Detect/infer the basic fuel quantity calculating unit that the air quantity of obtaining the unit is calculated fuel quantity according to this air quantity;
Described the 1st fuel character calculates the unit with fuel quantity, has the 1st fuel character fuel increment unit that the fuel quantity that is calculated unit calculating by described basic fuel quantity is carried out the increment correction; Described the 2nd fuel character calculates the unit with fuel quantity, has the 2nd fuel character fuel increment unit of comparing the few increment correction of the amount of carrying out with described the 1st fuel character with the fuel increment unit.
6. the control gear of motor as claimed in claim 1 is characterized in that: described fuel character identifying unit, reach required time of predetermined angular and at least one in the air fuel ratio according to engine revolution, engine revolution, and judge fuel character.
7. the control gear of motor as claimed in claim 6 is characterized in that: described fuel character identifying unit, reach differential value and/or the second differential value of required time of predetermined angular according to engine revolution or engine revolution, and judge fuel character.
8. the control gear of motor as claimed in claim 7 is characterized in that: described fuel character identifying unit, a described differential value and the specified value of predesignating are compared, and according to the size of comparative result, judge fuel character.
9. the control gear of motor as claimed in claim 7 is characterized in that: described fuel character identifying unit, described second differential value and the specified value of predesignating are compared, and according to the size of comparative result, judge fuel character.
10. as the control gear of claim 1,6～9 each described motors, it is characterized in that: possess the fuel character confirmation unit, this fuel character confirmation unit, judging that by described fuel character identifying unit fuel character is during than the 2nd fuel character heavy, calculating the unit by described the 2nd fuel character with fuel quantity switches to after described the 1st fuel character calculates the unit with fuel quantity, carry out the judgement of fuel character by described fuel character identifying unit once more, confirm the proterties of the actual fuel that uses.
11. the control gear of motor as claimed in claim 10, it is characterized in that: calculate the unit by the 2nd fuel character with fuel quantity and switch to after the 1st fuel character calculates the unit with fuel quantity, the result of determination of described fuel character identifying unit, when inequality, the proterties of the fuel of the actual use of described fuel character confirmation unit identification is a heavy with the result of determination of formerly carrying out.
12. the control gear of motor as claimed in claim 10 is characterized in that: possess proterties, the control parameters of engine computing unit of the Control Parameter of calculation engine according to the fuel of the actual use of judging by described fuel character identifying unit.
13. the control gear of motor as claimed in claim 12 is characterized in that: described control parameters of engine computing unit, calculate Control Parameter or the unified Control Parameter of controlling all cylinders controlled according to each cylinder.
14. the control gear of motor as claimed in claim 1, it is characterized in that: described fuel character identifying unit, also considering becomes more than the specified value respectively or following number of times from number of times or angle accelerated acceleration that the startup of motor is played the angular acceleration through the motor till the stipulated time zero hour and become more than the specified value, judges the proterties of the actual fuel that uses.
15. the control gear of motor as claimed in claim 1, it is characterized in that: the number of times or the angle accelerated acceleration that become more than the specified value according to the angular acceleration that plays the zero hour from the startup of motor through the motor till the stipulated time become more than the specified value respectively or following number of times, adjust the judgement threshold value that described fuel character identifying unit uses.
16. the control gear of motor as claimed in claim 1 is characterized in that: described operating condition detects the unit, detects to suck air quantity, fuel injection amount and exhaust air-fuel ratio, as the operating condition behind the engine start.
17. the control gear of a motor is characterized in that, possesses:
The 1st fuel character calculates the unit with fuel quantity, calculates the fuel quantity that heavy fuel is used;
The 2nd fuel character calculates the unit with fuel quantity, the fuel quantity that the fuel of the centre of calculating heavy and lightweight is used;
Judge the fuel character identifying unit of fuel character; With
The operating condition that detects the operating condition of motor detects the unit,
When engine start, use described the 1st fuel character to calculate the unit with fuel quantity;
Behind engine start, when the operating condition that detects the motor that the unit detects when described operating condition satisfies rated condition, no matter the actual fuel that uses is any proterties, all forcibly switch to described the 2nd fuel character with fuel quantity calculating unit and calculate the unit with fuel quantity by described the 1st fuel character
Calculate the unit by described the 1st fuel character with fuel quantity and switch to after described the 2nd fuel character calculates the unit with fuel quantity, described fuel character identifying unit is judged when fuel character is heavy, is switched to described the 1st fuel character and calculate the unit with fuel quantity.
18. the control gear of motor as claimed in claim 17, it is characterized in that: described operating condition detects the unit, detect at least one in total suction air quantity, inhalation temperature, engine cooling water temperature and the air fuel ratio behind period behind transit time behind engine revolution, the engine start, the engine start, air suction way internal pressure, the engine start, when this operating condition that detects satisfies defined terms, switch to the 2nd fuel character by described the 1st fuel character with fuel quantity calculating unit and calculate the unit with fuel quantity.
19. the control gear of a motor is characterized in that, possesses:
The 1st fuel character calculates the unit with fuel quantity, calculates the fuel quantity that heavy fuel is used;
The 3rd fuel character calculates the unit with fuel quantity, calculates the fuel quantity that light Fuel is used;
The 2nd fuel character calculates the unit with fuel quantity, calculates than the described light Fuel fuel quantity used of the fuel of lightweight more;
Judge the fuel character identifying unit of fuel character; With
The operating condition that detects the operating condition of motor detects the unit,
When engine start, use described the 1st fuel character to calculate the unit with fuel quantity;
Behind the engine start, when engine revolution is lower than the specified value of predesignating, or behind the engine start transit time than the stipulated time of predesignating in short-term, calculate the unit by described the 1st fuel character with fuel quantity and carry out the calculating of fuel quantity; When engine revolution is higher than the specified value of predesignating, or when the transit time is longer than stipulated time of predesignating behind the engine start, calculate the unit by described the 2nd fuel character with fuel quantity and carry out the calculating of fuel quantity, switch to described the 3rd fuel character by described the 2nd fuel character with fuel quantity calculating unit again and calculate the unit with fuel quantity.
20. the control gear of motor as claimed in claim 19, it is characterized in that: described operating condition detects the unit, detect at least one in total suction air quantity, inhalation temperature, engine cooling water temperature and the air fuel ratio behind period behind transit time behind engine revolution, the engine start, the engine start, air suction way internal pressure, the engine start, when this operating condition that detects satisfies defined terms, switch to the 2nd fuel character by described the 1st fuel character with fuel quantity calculating unit and calculate the unit with fuel quantity.
21. an automobile is characterized in that: the control gear that has carried each described motor of claim 1～20.
CN2007100017229A 2006-01-24 2007-01-16 Engine control apparatus Expired - Fee Related CN101008358B (en)

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Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITCZ20060031A1 (en) * 2006-11-14 2008-05-15 Domenico Liccese ELECTRONIC CONTROL UNIT TO CHECK THE OPERATING PARAMETERS OF AN INTERNAL COMBUSTION ENGINE IN ORDER TO OPTIMIZE OPERATION AND A METHOD FOR APPLYING THE LOGIC OF THE CONTROL OF SUCH PARAMETERS
US7809494B2 (en) * 2007-09-27 2010-10-05 Hitachi, Ltd. Engine control apparatus
JP2009167894A (en) * 2008-01-16 2009-07-30 Hitachi Ltd Engine control device
JP4846852B2 (en) * 2010-02-03 2011-12-28 川崎重工業株式会社 Fuel supply device with fuel switching function
JP5609132B2 (en) 2010-02-12 2014-10-22 トヨタ自動車株式会社 Control device for internal combustion engine
JP5557094B2 (en) * 2010-05-18 2014-07-23 スズキ株式会社 Fuel supply device for internal combustion engine
US9534547B2 (en) 2012-09-13 2017-01-03 GM Global Technology Operations LLC Airflow control systems and methods
US9765703B2 (en) 2013-04-23 2017-09-19 GM Global Technology Operations LLC Airflow control systems and methods using model predictive control
US9714616B2 (en) 2014-03-26 2017-07-25 GM Global Technology Operations LLC Non-model predictive control to model predictive control transitions
US9587573B2 (en) 2014-03-26 2017-03-07 GM Global Technology Operations LLC Catalyst light off transitions in a gasoline engine using model predictive control
US9599053B2 (en) 2014-03-26 2017-03-21 GM Global Technology Operations LLC Model predictive control systems and methods for internal combustion engines
US9863345B2 (en) 2012-11-27 2018-01-09 GM Global Technology Operations LLC System and method for adjusting weighting values assigned to errors in target actuator values of an engine when controlling the engine using model predictive control
US9920697B2 (en) 2014-03-26 2018-03-20 GM Global Technology Operations LLC Engine control systems and methods for future torque request increases
US9784198B2 (en) 2015-02-12 2017-10-10 GM Global Technology Operations LLC Model predictive control systems and methods for increasing computational efficiency
US9797318B2 (en) 2013-08-02 2017-10-24 GM Global Technology Operations LLC Calibration systems and methods for model predictive controllers
US9541019B2 (en) 2014-03-26 2017-01-10 GM Global Technology Operations LLC Estimation systems and methods with model predictive control
US9528453B2 (en) 2014-11-07 2016-12-27 GM Global Technologies Operations LLC Throttle control systems and methods based on pressure ratio
US9599049B2 (en) 2014-06-19 2017-03-21 GM Global Technology Operations LLC Engine speed control systems and methods
US9399959B2 (en) 2014-03-26 2016-07-26 GM Global Technology Operations LLC System and method for adjusting a torque capacity of an engine using model predictive control
US9605615B2 (en) 2015-02-12 2017-03-28 GM Global Technology Operations LLC Model Predictive control systems and methods for increasing computational efficiency
US9435274B2 (en) 2014-03-26 2016-09-06 GM Global Technology Operations LLC System and method for managing the period of a control loop for controlling an engine using model predictive control
US9732688B2 (en) 2014-03-26 2017-08-15 GM Global Technology Operations LLC System and method for increasing the temperature of a catalyst when an engine is started using model predictive control
US9429085B2 (en) 2013-04-23 2016-08-30 GM Global Technology Operations LLC Airflow control systems and methods using model predictive control
US9664125B2 (en) * 2013-08-07 2017-05-30 Ford Global Technologies, Llc Method and system for transient fuel control
US9665077B2 (en) * 2013-12-18 2017-05-30 General Electric Company Gas turbine firing temperature control system and method
DE102015104099B4 (en) * 2014-03-26 2019-09-12 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Diagnostic systems and diagnostic methods using model prediction control
AT516532B1 (en) * 2014-11-24 2019-10-15 Innio Jenbacher Gmbh & Co Og Method for starting an internal combustion engine operated with a fuel-air mixture
US9938908B2 (en) 2016-06-14 2018-04-10 GM Global Technology Operations LLC System and method for predicting a pedal position based on driver behavior and controlling one or more engine actuators based on the predicted pedal position
CN108547702A (en) * 2018-03-30 2018-09-18 潍柴重机股份有限公司 A kind of light/heavy oil pattern automatic conversion control method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181938A (en) * 1981-04-30 1982-11-09 Hitachi Ltd Engine control device
JPH076425B2 (en) * 1986-12-29 1995-01-30 本田技研工業株式会社 Fuel supply control method after start of internal combustion engine
JP2884472B2 (en) * 1994-03-23 1999-04-19 株式会社ユニシアジェックス Fuel property detection device for internal combustion engine
JPH08177553A (en) 1994-12-27 1996-07-09 Nissan Motor Co Ltd Air-fuel ratio control device for engine
JP3494516B2 (en) * 1995-11-28 2004-02-09 株式会社日立ユニシアオートモティブ Fuel property detection device for internal combustion engine
JP3355269B2 (en) * 1996-01-25 2002-12-09 株式会社日立ユニシアオートモティブ Fuel property detection device for internal combustion engine
JP4042270B2 (en) 1999-05-24 2008-02-06 トヨタ自動車株式会社 Start control device for internal combustion engine
JP4270085B2 (en) * 2004-09-14 2009-05-27 トヨタ自動車株式会社 Control device for internal combustion engine

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US20070169757A1 (en) 2007-07-26
EP1811158A3 (en) 2010-09-01
US7472692B2 (en) 2009-01-06
JP2007198176A (en) 2007-08-09
CN101008358A (en) 2007-08-01
JP4446084B2 (en) 2010-04-07

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